Disc ball valve is a commonly used and widely used type of valve, which is installed horizontally in various pipelines to cut off, distribute, and change the flow direction of the medium. Disc ball valves can be divided into one piece, two piece, and three piece types. How to correctly and quickly distinguish different types can be better understood through the following.

The flange globe valve belongs to the forced sealing type valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters valve 6 from below the valve disc, the resistance that needs to be overcome by the operating force is the friction force between the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diame

Design engineers of aerospace propulsion systems always face the challenge of optimizing system performance. As program requirements increase, system design engineers conduct industry surveys to determine the availability of components that can improve system performance. One of the areas that needs improvement is the check valve.

Valves are divided into the following materials: The material of the valve stem liner should have a hardness and strength not greater than that of the valve stem, and should not form electrochemical corrosion with the valve stem and valve body under water immersion conditions. 2. Material of sealing surface. The material of the 3 nuts is cast aluminum brass or cast aluminum bronze, and their hardness and strength are both greater than those of the valve stem. 4. Valve material: As gray cast

The working principle of a ball valve is to rotate the ball to make the valve unobstructed or blocked. Ball valves are lightweight, small in size, and can be made into large diameters. They are reliable in sealing, have a simple structure, and are easy to maintain. The sealing surface and spherical surface are often in a closed state, and are not easily eroded by media. They are widely used in various industries.

1、 Working principle of flange type high-pressure shut-off valve High pressure shut-off valves belong to the forced sealing type, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the resistance that needs to be overcome by the operating force is the friction force between the valve stem and packing and the thrust generated by the pressure of the medium. The force to close